president obama's chicago home that prompted this crackdown, and dean reynolds has more. >> hadiya pendleton was shot in the back on tuesday as she and some friends gathered at this park on the way home from high school. targeted, police said, by a gunman who likely thought they were rival gang members trespassing on his turf. damon stewart is hadiya's godfather and a chicago policeman. >> wrong place, wrong time-- one individual walks in, and somebody does a shooting. nothing you can do about it. >> reporter: but the plan announced today to shift 200 police officers from desk jobs to street duty is one initiative designed to saturate gang- infested neighborhoods with law enforcement. >> as we grieve for hadiya, we need to work together to protect our greatest resource-- the children of the city of chicago. >> reporter: but earlier this month, the mayor admitted it will take more than flooding chicago with cops to stop the killing. >> there's an element to that. there's an element to people's sense of not having any sense of hope. but that doesn't dismiss or permit... >> reporter: or excuse.